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265results about How to "Imperceptible" patented technology

Method and device for speed measurement based on geomagnetic sensing

The invention discloses a method and a device for speed measurement based on geomagnetic sensing. The method comprises the following steps of: arranging multiple groups of geomagnetic sensor nodes on a same lane of a road, each group comprising two geomagnetic sensors with a fixed distance and in the same direction; detecting, by the geomagnetic sensors, a passing situation of vehicles by using a fixed threshold value method: setting a fixed geomagnetic strength as a threshold value, and determining the arrival of a vehicle when detecting that the magnetic field strength is changed and continuously exceeds the threshold value; determining the departure of the vehicle when the magnetic field strength is changed and is continuously smaller than the threshold value; and according to the distance between two geomagnetic sensors in each group of the geomagnetic sensor nodes, and the times of the arrival and departure of the vehicle, calculating the driving speed of the vehicle in this period of time, wherein the average value of the driving speeds of the vehicle, calculated by the multiple groups of geomagnetic sensor nodes, is a finally measured driving speed of the vehicle. By use of the method and the device disclosed by the invention, overspeed phenomena on a common road or an expressway can be effectively detected and corrected in time, so that the method and the device have the characteristics of strong function, low price, convenience, flexibility and the like.
Owner:NANJING UNIV OF SCI & TECH +1

Mobile phone fingerprint recognition alarm system and alarm method

The invention discloses a mobile phone fingerprint recognition alarm system and alarm method. The system comprises an information setting module which is used for setting fingerprint information, multiple groups of phone numbers and help calling information; a fingerprint recognition module which is used for comparing the collected fingerprint information of a user with the fingerprint information stored by the setting module and judging whether the information is consistent or not; a number search module which is used for automatically searching a phone number matching with the fingerprint; an automatic dialing module which is used for automatically dialing the phone number; a location module which is used for marking the geographical location of the user; an information sending module which is used for sending the geographical location information and help calling information of the user; and an alarm module which is used for triggering alarm bell. According to the system and the method, an SOS help calling function is started through fingerprint recognition; the system can automatically dial the phone number, send a short message and so on; the help calling information of the user can be rapidly and effectively sent in a hidden mode; the system and the method are applied to the smart phone; and the demands of the user group of the smart phone can be satisfied.
Owner:SHENZHEN ARTS CHANGHUA INTELLIGENT TECH CO LTD

Device and method for monitoring telephone number of user

The invention relates to a device and method for monitoring a telephone number of a user. A software radio platform and a global system of mobile communication (GSM) protocol stack program are utilized by the device and method to build a regulation base station system which has a base transceiver station (BTS) function of a GSM network, and the regulation base station system is used for conducting wireless communication with a telephone of the user and extracting identification information, like an international mobile subscriber identification number (IMSI), of the telephone of the user. According to the IMSI of the telephone of the user, a subscriber identity module (SIM) card simulation program is used for achieving SIM card simulation on the telephone of the user, the SIM card simulation program completes operations, such as network authentication and position updating, and then is attached to a normal network through information interaction between identity simulation equipment and a simulation user telephone SIM card, finally the telephone number of the user is extracted by dialing of a called terminal, and monitoring of the telephone number of the user is achieved according to a preset security policy. The device and method is mainly composed of six components including a software radio module, a called terminal module, an identity simulation module, an SIM card simulation module, a main control module and a GSM protocol stack analysis module.
Owner:东南大学常州研究院

Intelligent remote control anti-theft door with internally hidden invisible door capable of receiving express deliveries and for pets passing through

The invention discloses an intelligent remote control anti-theft door with an internally hidden invisible door capable of receiving express deliveries and for pets passing through. The intelligent remote control anti-theft door comprises a door frame, a door leaf, and an intelligent electric lock. The invisible door is hidden below the door leaf, the invisible door is arranged in an interlayer between an iron plate which is located below the front face of the door leaf facing outdoors and an iron plate below the reverse face of the door leaf facing indoors, the invisible door is tightly attached to a guide rail to slide up and down, the invisible door is connected with an electric pushing rod, and the electric pushing rod operates according to orders from a single-chip controller. A door bell button, a front camera, a back camera, an audio collector, a pyroelectric infrared sensor, a horn alarm, and an electric intelligent lock are arranged on the front face of the door leaf. The intelligent lock comprises a password, and a fingerprint reader. A touching screen, an audio and video module, a wireless communication send-receive device and the single-chip controller are arranged on the reverse face of the door leaf. When express delivery personnel get through the call and require to open the door, under the cell phone remote monitoring, users can control the risen height of the invisible door according to the size of goods, so that the opening safety of the invisible door is ensured. The invisible door is imperceptible if not opened, and integrated with the whole anti-theft door, the overall attractiveness of the anti-theft door is not influenced at all, and the problem of express delivery receiving and pets passing through the anti-theft door are solved well.
Owner:赵莉生

Method and system for filtering online monitored noise of steel rail cracks and judging cracks

The invention discloses a method for filtering online monitored noise of steel rail cracks and judging the cracks. The method comprises the following steps: collecting steel rail sound signals by virtue of an acoustic emission sensor, and transferring the steel rail sound signals back to a monitoring terminal by virtue of a collection controller, and processing; carrying out hierarchical decomposition on the steel rail sound signals by virtue of a db6 wavelet, so as to obtain a wavelet packet reconstruction signal component, time, frequency and a wavelet coefficient; calculating a frequency band energy ratio, so as to eliminate high-frequency interference in the wavelet packet reconstruction signal component caused by striking; reconstructing the wavelet coefficient of the rest wavelet packet reconstruction signal component, so as to obtain reconstruction signals; carrying out classical acoustic emission parameter analysis on the reconstruction signals, so as to obtain acoustic emission parameters; and analyzing correlation diagrams and experience diagrams, so as to judge whether the cracks are expanded. By virtue of the method, noise interference signals in acoustic emission signals can be effectively removed, crack signals can be separated from the interference signals, and the separation precision is high; and the method can be used for processing smooth signals and has a local analysis function to non-smooth signals.
Owner:SICHUAN SOUTHWEST JIAOTONG UNIV RAILWAY DEV

Microdevice for secretly extracting information of Android mobile phone and extraction method

The present invention discloses a microdevice for secretly extracting information of an Android mobile phone and an extraction method. The method comprises: firstly, connecting a microdevice with data of an Android mobile phone from which electronic evidence is to be extracted; secondly, communicating with an externally connected target Android mobile phone by using a pulling file interface provided by an adb debugging tool and an interface of establishing Socket communication; and then, acquiring a root access privilege out of the target mobile phone by using an adb root interface provided by the abd debugging tool: if the root access privilege can be acquired, directly and rapidly extracting a corresponding file according to settings of a user, and if the root access privilege can not be acquired, installing a plug-in that can communicate with the microdevice in the target mobile phone, and completing data extraction by using the plug-in. According to the solution provided by the present invention, the microdevice is very small in volume, convenient to hide and not easy to notice; without the need for operation of the user, automatic extraction is performed after a target device is connected to the microdevice; and an extraction speed is high, extraction of key data can be completed within a few seconds or tens of seconds and time of contact with the target device is short.
Owner:PANSAFE SOFTWARE SHANGHAI

Cellphone full-system information collection and human face recognition analysis comparison system and usage

The invention discloses a cellphone full-system information collection and human face recognition analysis comparison system. The system comprises a target crowd, a collection device, an analysis device, a transmission device, an analysis comparison system, and a display terminal, wherein collection objects of the target crowd comprise a cellphone serial number and facial characteristics; the collection device comprises and uses one or more of an on-board device, a portable camera, and a fixed camera simultaneously; the analysis device comprises and uses one or more of on-board collection, portable collection, and a human face detection tag search system simultaneously; the transmission device comprises an optical fiber transmission mode and a wireless transmission mode, and according to the wireless transmission mode, independent data is transmitted wirelessly through a public network; the analysis comparison system comprises a human face and serial number analysis comparison comprehensive server, a big data human face comparison recognition system, a human face data management platform, and a high definition video memory; and the display terminal is used for displaying warning, statistics, searching, monitoring and analysis data results.
Owner:SHANDONG CHUANGHUI TECH CO LTD
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